CN207080177U - A kind of roller cutter bit for entering rock pore-forming for the rig that circles round - Google Patents
A kind of roller cutter bit for entering rock pore-forming for the rig that circles round Download PDFInfo
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- CN207080177U CN207080177U CN201721037449.0U CN201721037449U CN207080177U CN 207080177 U CN207080177 U CN 207080177U CN 201721037449 U CN201721037449 U CN 201721037449U CN 207080177 U CN207080177 U CN 207080177U
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- bottom plate
- roller cutter
- cutter bit
- circular bottom
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Abstract
It the utility model is related to a kind of roller cutter bit for entering rock pore-forming for the rig that circles round, it includes hollow auger spindle, in the circular bottom plate of circle centre position and core drill axis connection, the steel pipe penetrated around cylinder of the core drill axis connection in circular bottom plate periphery, the bottom from circular bottom plate inside hollow auger spindle, multiple steel knife heads for being set in the bottom outer ring of circular bottom plate and inner lane, wherein cylinder is located at the mouth of pipe of circular bottom plate bottom with being connected inside hollow auger spindle with hollow auger spindle with Interal fixation, steel pipe is strengthened.Using roller cutter bit of the present utility model, rock can be more preferably ground off faster, promote rate of penetration.
Description
Technical field
It the utility model is related to a kind of roller cutter bit for entering rock pore-forming for the rig that circles round.
Background technology
In pouring pile hole construction, convolution rig because its rate of penetration is fast, into hole perpendicularity is good, uniform pore diameter, had both passed through
The Ji preferred unit easy to operate for turning into construction again, but common convolution drill hole of drilling machine construction be only applicable to foundation soil for sand,
Silt, cohesive soil, artificial earth fill or the three class soil properties containing a small amount of sand gravel, if there is four class soil properties or rubble, sand gravel,
Situations such as rock, the method for percussive drill can only be changed to continue the construction of pile foundation boring, but during the pore-forming of percussive drill
Between be circle round 2 times of rig, expense be to circle round 3 times or so of rig.
Utility model content
The purpose of this utility model is solve above-mentioned prior art problem, there is provided one kind enters rock pore-forming for the rig that circles round
Roller cutter bit, can in the case where being changed without rig, by transform more bit change creep into four class soil properties, greatly improve production
Efficiency, fund is saved, ensures progress, shorten the duration.
Roller cutter bit of the present utility model includes hollow auger spindle, in circle centre position and the circle of core drill axis connection (such as welding)
Shape bottom plate (thickness 15-40mm, preferably 20-30mm), around core drill axis connection in the cylinder of circular bottom plate periphery, from circular base
Steel pipe that the bottom of plate is penetrated inside hollow auger spindle, the multiple steel knife heads set in the bottom outer ring of circular bottom plate and inner lane are (excellent
Select wolfram steel cutter head), wherein cylinder is located at the mouth of pipe and hollow of circular bottom plate bottom with hollow auger spindle with Interal fixation, steel pipe is strengthened
Connected inside auger spindle.
Further, circumference of the steel knife head along outer ring equably sets 4, equably sets 3 along the circumference of inner lane
It is individual and centrally disposed one, and cutter head interlaced arrangement.
Further, it is used to ensure pore size in cylinder peripheral solder and the bar of the frictional force of drill bit and hole wall can be reduced
Shape steel plate.It is preferred that bar steel plate is equably distributed three or four along cylinder periphery.
Further, length of steel pipe 40-60cm, 135 degree are curved.
Further, the periphery of circular bottom plate sets mud diversion trench.
Further, three or four reinforcement steel plates are equably distributed along around cylinder to fix with hollow auger spindle.
The construction method for being entered rock pore-forming using the convolution rig of roller cutter bit of the present utility model is comprised the following steps：
(A) boring mud is prepared；
Preferably, the control of pore-creating mud technical indicator is in proportion 1.10-1.13g/cm3, viscosity 20-26s, sand content ＜
8%；Pile concrete perfusion fullness coefficient is no less than 1.0, preferably greater than 1.1.
(B) site localization and embedded casing：Using theodolite, survey station is made with axial line control point, method of polar coordinates carries out stake position
Setting-out, by mechanical equivalent of light excavation, bury steel pile casting fixed hole position.
Stake position center is preferably further checked with axis intersection, casing centre deviation is strictly controlled when embedded<2±
0.5cm, preferably ＜ 2cm, perpendicularity ＜ 0.5 ± 0.2%, preferably ＜ about 0.5%, casing 30cm ± 5cm above ground level, preferably from about
30cm, while aperture casing top mark height is measured with spirit level, as the foundation for determining pore depth and stake top absolute altitude, casing Ying Jian
Real water-tight, internal diameter 20-40cm bigger than stake footpath or so.
(C) drilling construction：It is in place including selection convolution rig, at site localization, boring common three leaf of stake machine weak soil
Drill bit drilling construction, when stake machine drill, which proceeds to drilling rod, obvious shake occurs, with reference to geology prospecting report, it is confirmed whether to have been enter into wind
Hua Yan interfaces and the hole depth data at drilling strong-weathered rock interface, replacing hobboing cutter bores after confirming drilling depth arrival strongly weathered sand-rock
Head, continue drilling (preferably uninterrupted recording data and collection of rock sample work, and the authorization that keeps sample in the process), work as rate of penetration
During obvious reduction, scene is confirmed whether drilling to strong-weathered rock and middle decomposed rock interface；
(D) whole hole is checked and accepted：When drilling depth reaches design supporting course scar depth, in casing grout outlet or slag collection is dragged for
Rock sample is identified, hole termination depth is reached design requirement；
(E) borehole cleaning：A borehole cleaning is carried out after whole hole acceptance(check) immediately, mud is injected into hole, followed in hole
Ring changes slurry, while sweeps brill at a slow speed to disturb bottom hole sediment, accelerates borehole cleaning speed, last repetition measurement hole depth, confirms that sediment is less than design
Pulled out of hole after it is required that.
(F) steel reinforcement cage and conduit are hung：Steel reinforcement cage and conduit are hung in drill hole；
(G) secondary pile hole cleaning：To ensure that bottom hole sediment reaches design requirement (≤50mm), method of air lifting reverse circulation is taken, with reference to
Pressure-air flushing hole bottom, carry out secondary pile hole cleaning；
(H) filling concrete.
Preferably, concreting is carried out after secondary pile hole cleaning in 30min, and conduit is 30-50cm away from hole bottom distance, perfusion
During the first tank concrete, groundwater increment should be able to meet that the first tank filling concrete must not more than 1.5m in conduit Transducers Embedded in Concrete
Conduit is promoted, filling concrete should be carried out continuously.Must have in filling process special messenger's survey calculation hole inner concrete face depth and
Length of embedment of the conduit in concrete, and make a record, conduit length of embedment is adjusted in time, and conduit Transducers Embedded in Concrete depth is
2~6m, conduit is forbidden to propose concrete surface.The groundwater increment of last tank concrete is controlled, pile should be higher by design stake top absolute altitude
More than 500mm, and must assure that stake top concrete reaches strength failure criterion after cutting laitance.
Using roller cutter bit of the present utility model, rock can be more preferably ground off faster, promote rate of penetration.
Brief description of the drawings
Fig. 1 is roller cutter bit structural representation.
Fig. 2 is distribution schematic diagram of the steel knife head in circular bottom plate.
Embodiment
The utility model is further illustrated below in conjunction with accompanying drawing, it should be understood, however, that the following description is merely illustrative
Property, do not form to any restrictions of the present utility model.
As shown in Figure 1 and Figure 2, roller cutter bit of the present utility model includes hollow auger spindle 1, connected in circle centre position and hollow auger spindle
Connect the circular bottom plate 5 (thickness 15-40mm, preferably 20-30mm) of (such as welding), around core drill axis connection in outside circular bottom plate
Week cylinder 3, penetrated from the bottom of circular bottom plate inside hollow auger spindle steel pipe 7, in the bottom outer ring of circular bottom plate and inner lane
The multiple steel knives first 6 (preferably wolfram steel cutter head, more preferably superfine hobboing cutter wolfram steel cutter head) set, wherein cylinder 3 is used with hollow auger spindle 1
Strengthen steel plate 2 to fix, the mouth of pipe that steel pipe 7 is located at circular bottom plate bottom connects with the inside of hollow auger spindle 1.
Further, circumference of the steel knife first 6 along outer ring equably sets 4, equably sets 3 along the circumference of inner lane
It is individual and centrally disposed one, and cutter head interlaced arrangement.
Further, it is used to ensure pore size in cylinder peripheral solder and the bar of the frictional force of drill bit and hole wall can be reduced
Shape steel plate 4.It is preferred that bar steel plate is equably distributed three or four along cylinder periphery.
Further, length of steel pipe 40-60cm, 135 degree are curved.
Further, the periphery of circular bottom plate sets mud diversion trench 8.
Further, three or four reinforcement steel plates 2 are equably distributed along around cylinder to fix with hollow auger spindle 1.
The roller cutter bit can be prepared as follows：One piece of 60mm smaller than stake holes diameter steel plate is cut first as bottom plate, is looked for
The director circle heart is welded hollow auger spindle is vertical with bottom plate, on bottom plate perforate DN80 steel pipes are passed 10cm and welded with steel plate, steel pipe
The other end connects with the welding of hollow auger spindle, to ensure that mud flows out circulation from there, then processes one and bottom plate diameter with steel plate
Identical cylinder, is welded on bottom plate, and cylinder is welded and fixed with hollow auger spindle with three reinforcement steel plates, then is burn-on in cylinder periphery
Bar steel plate wide three 40mm, to ensure pore size and the frictional force of drill bit and hole wall can be reduced, finally in bottom plate
The preferably superfine wolfram steel cutter head of wolfram steel cutter head of burn-oning below, outer lap welding 4, inner lane weldering 3, center weldering 1, cutter head interlaced arrangement,
More preferably to grind off rock faster, promote rate of penetration.
Enter rock drilling construction method using the convolution rig of roller cutter bit of the present utility model to comprise the following steps：
(A) boring mud is prepared；
Preferably, the control of pore-creating mud technical indicator is in proportion 1.10-1.13g/cm3, viscosity 20-26s, sand content ＜
8%；Pile concrete perfusion fullness coefficient is no less than 1.0, preferably greater than 1.1.
(B) site localization and embedded casing：Using theodolite, survey station is made with axial line control point, method of polar coordinates carries out stake position
Setting-out, by mechanical equivalent of light excavation, bury steel pile casting fixed hole position.
Stake position center is preferably further checked with axis intersection, casing centre deviation is strictly controlled when embedded<2±
0.5cm, preferably ＜ 2cm, perpendicularity ＜ 0.5 ± 0.2%, preferably ＜ about 0.5%, casing 30cm ± 5cm above ground level, preferably from about
30cm, while aperture casing top mark height is measured with spirit level, as the foundation for determining pore depth and stake top absolute altitude, casing Ying Jian
Real water-tight, internal diameter 20-40cm bigger than stake footpath or so.
(C) drilling construction：It is in place including selection convolution rig, at site localization, boring common three leaf of stake machine weak soil
Drill bit drilling construction, when stake machine drill, which proceeds to drilling rod, obvious shake occurs, with reference to geology prospecting report, it is confirmed whether to have been enter into wind
Hua Yan interfaces and the hole depth data at drilling strong-weathered rock interface, replacing hobboing cutter bores after confirming drilling depth arrival strongly weathered sand-rock
Head, continue drilling (preferably uninterrupted recording data and collection of rock sample work, and the authorization that keeps sample in the process), work as rate of penetration
During obvious reduction, scene is confirmed whether drilling to strong-weathered rock and middle decomposed rock interface；
(D) whole hole is checked and accepted：When drilling depth reaches design supporting course scar depth, in casing grout outlet or slag collection is dragged for
Rock sample is identified, hole termination depth is reached design requirement；
(E) borehole cleaning：A borehole cleaning is carried out after whole hole acceptance(check) immediately, mud is injected into hole, followed in hole
Ring changes slurry, while sweeps brill at a slow speed to disturb bottom hole sediment, accelerates borehole cleaning speed, last repetition measurement hole depth, confirms that sediment is less than design
Pulled out of hole after it is required that.
(F) steel reinforcement cage and conduit are hung：Steel reinforcement cage and conduit are hung in drill hole；
Design requirement should be met during fabrication of reinforcing cage, to ensure that steel bar cage protecting layer meets design requirement, using concrete
Precast hollow disk is inserted in steel reinforcement cage, along cage around arrange；
Downcomer immediately after steel reinforcement cage places, using Ф 250mm screw-type conduits, should check its sealing before conduit use
Property, to after bottom hole under Section 1 conduit, then lift 30-50cm.
(G) secondary pile hole cleaning：To ensure that bottom hole sediment reaches design requirement (≤50mm), air lift reverse known in the art is taken
Round-robin method, with reference to pressure-air flushing hole bottom, carry out secondary pile hole cleaning；
(H) filling concrete.
Preferably, concreting is carried out after secondary pile hole cleaning in 30min, and conduit is 30-50cm away from hole bottom distance, perfusion
During the first tank concrete, groundwater increment should be able to meet that the first tank filling concrete must not more than 1.5m in conduit Transducers Embedded in Concrete
Conduit is promoted, filling concrete should be carried out continuously.Must have in filling process special messenger's survey calculation hole inner concrete face depth and
Length of embedment of the conduit in concrete, and make a record, conduit length of embedment is adjusted in time, and conduit Transducers Embedded in Concrete depth is
2~6m, conduit is forbidden to propose concrete surface.The groundwater increment of last tank concrete is controlled, pile should be higher by design stake top absolute altitude
More than 500mm, and must assure that stake top concrete reaches strength failure criterion after cutting laitance.
Claims (8)
1. a kind of roller cutter bit for entering rock pore-forming for the rig that circles round, it includes hollow auger spindle, connected in circle centre position and hollow auger spindle
The circular bottom plate that connects, around cylinder of the core drill axis connection in circular bottom plate periphery, the bottom from circular bottom plate penetrate core drill
Steel pipe inside axle, the multiple steel knife heads set in the bottom outer ring of circular bottom plate and inner lane, wherein cylinder are used with hollow auger spindle
Strengthen Interal fixation, steel pipe is located at the mouth of pipe of circular bottom plate bottom with being connected inside hollow auger spindle.
2. roller cutter bit according to claim 1, it is characterised in that steel knife head equably sets 4 along the circumference of outer ring
It is individual, 3 and centrally disposed one, and cutter head interlaced arrangement are equably set along the circumference of inner lane.
3. roller cutter bit according to claim 1, it is characterised in that steel knife head is wolfram steel cutter head.
4. according to the roller cutter bit any one of claim 1-3, it is characterised in that be used to ensure in cylinder peripheral solder
Pore size and the bar steel plate that the frictional force of drill bit and hole wall can be reduced.
5. according to the roller cutter bit any one of claim 1-3, it is characterised in that length of steel pipe 40-60cm, curve
135 degree.
6. according to the roller cutter bit any one of claim 1-3, it is characterised in that the periphery of circular bottom plate sets mud
Guiding gutter.
7. according to the roller cutter bit any one of claim 1-3, it is characterised in that circular bottom plate thickness is 20-30mm.
8. according to the roller cutter bit any one of claim 1-3, it is characterised in that equably divide around along cylinder
Cloth three or four is strengthened steel plate and fixed with hollow auger spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721037449.0U CN207080177U (en) | 2017-08-18 | 2017-08-18 | A kind of roller cutter bit for entering rock pore-forming for the rig that circles round |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721037449.0U CN207080177U (en) | 2017-08-18 | 2017-08-18 | A kind of roller cutter bit for entering rock pore-forming for the rig that circles round |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207080177U true CN207080177U (en) | 2018-03-09 |
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ID=61419434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721037449.0U Active CN207080177U (en) | 2017-08-18 | 2017-08-18 | A kind of roller cutter bit for entering rock pore-forming for the rig that circles round |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207080177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979526A (en) * | 2018-09-19 | 2018-12-11 | 王立民 | A kind of complete drilling rig |
| CN115653503A (en) * | 2022-11-16 | 2023-01-31 | 中建二局第三建筑工程有限公司 | Directional drill bit convenient for hole forming of cast-in-place pile in complex soil body and construction method |
-
2017
- 2017-08-18 CN CN201721037449.0U patent/CN207080177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979526A (en) * | 2018-09-19 | 2018-12-11 | 王立民 | A kind of complete drilling rig |
| CN115653503A (en) * | 2022-11-16 | 2023-01-31 | 中建二局第三建筑工程有限公司 | Directional drill bit convenient for hole forming of cast-in-place pile in complex soil body and construction method |
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